US Patent 10247230 Hinge mechanisms

Embodiments generally relate to hinge mechanisms. The central cylinder has a rotate channel transverse to the hinge axis. A collar may couple with the central cylinder and may include a pin that protrudes inwardly into the rotate channel. In some embodiments, the central cylinder may include a second rotate channel and the pin may extend through the first and second rotate channels of the central cylinder. In some embodiments, the central cylinder may include a tapered locking channel that extends and tapers in an axial direction from the rotate channel. Optionally, the collar may include an aperture for receiving the pin therethrough. The pin may be repositionable to a plurality of positions relative to the collar about an insertion axis. The pin repositioning may vary an axial position of the collar relative to the central cylinder, a rotational range of motion of the collar about the central cylinder, or both.